netstat: Keep UTF-8 characters in process names - #68
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Commit 9beab79 fixed possible ANSI terminal injection. But it also started to sanitize UTF-8 characters in process names making them unreadable. For example (ln -sf /usr/bin/nc /tmp/ncáéí; /tmp/nc* -l 31337 &); netstat -alp was now converted to: nc...... With this change: If LC_CTYPE refers to UTF-8 locale: ncáéí Otherwise: nc?????? Convert special characters to "?" instead of ".". These changes make display names compatible with psmisc ps and iproute2 ss. The escape.c code is based on procps and modified by Stephen Hemminger <stephen@networkplumber.org> for iproute2 ss. Reference: https://lore.kernel.org/all/20250204162429.17902-1-stephen@networkplumber.org/ Due to the licensing reasons, the code is kept in a separate file in lib. But it is not added to the library. Reference: ecki#57
ecki
approved these changes
Jul 18, 2026
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Commit 9beab79 fixed possible ANSI terminal injection. But it also started to sanitize UTF-8 characters in process names making them unreadable.
For example
(ln -sf /usr/bin/nc /tmp/ncáéí; /tmp/nc* -l 31337 &); netstat -alp was now converted to:
nc......
With this change:
If LC_CTYPE refers to UTF-8 locale:
ncáéí
Otherwise:
nc??????
Convert special characters to "?" instead of ".".
These changes make display names compatible with psmisc ps and iproute2 ss.
The escape.c code is based on procps and modified by Stephen Hemminger stephen@networkplumber.org for iproute2 ss.
Reference: https://lore.kernel.org/all/20250204162429.17902-1-stephen@networkplumber.org/
Due to the licensing reasons, the code is kept in a separate file in lib. But it is not added to the library.
Reference: #57